3

Need actual values:
All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. Having said that, it might have helped if could provide the complete report of your test results. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, low fat milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form.
Practice safe sex.
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5

No, not necessarily:
It can very well be any viral infection other than mono, would give the same picture, the low RBCs count isn't related, it can be due to anemia from any cause, in your case could just be heavy menses. Confer with the doctor who ordered the test or get a HealthTap prime consult if you wish. Other than that rest, fluids, salt water gargles, pain killers till that bout is over, wish you wellness
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6

Many things.:
A low lymphocyte count can be associated with various causes. It can be congenital, as part of immune deficiency. It can be related to viral illness and other infections. It can be due to treatment with Prednisone and other immunosuppressive medications. It can be part of an autoimmune condition. But most common is transient due to simple viral infection.
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10

How low?:
The total count and proportion of lymphocytes needs to be looked at. All lab results need to be interpreted in the clinical context and the doctor who ordered the test is usually in the best position to do that. See this site for more info.
http://www.nhlbi.nih.gov/health/health-topics/topics/lym/.
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